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Accuracy of video imaging in mandibular surgery
A C Carter1, B E Larson, T A Guenthner
1Section of Orthodontics, Mayo Clinic, Rochester, Minnesota 55905, USA.
The International Journal of Adult Orthodontics and Orthognathic Surgery
|January 1, 1996
Summary
Video imaging for orthodontic-orthognathic surgery planning shows significant variation, with software inaccuracy being the primary cause. This impacts the reliability of predicting treatment outcomes for patients.
Area of Science:
- Dentistry
- Medical Imaging
- Orthodontics
Background:
- Video imaging is used to simulate combined orthodontic-orthognathic surgical treatments.
- Accurate treatment planning and patient education are crucial in these complex procedures.
Purpose of the Study:
- To compare video imaging predictions with actual posttreatment results in patients undergoing orthodontic and mandibular orthognathic surgery.
- To assess the accuracy and reproducibility of video imaging in simulating surgical outcomes.
Main Methods:
- Compared soft tissue landmark positions between video imaging predictions and posttreatment photographs for 18 patients.
- Analyzed variations relative to horizontal and vertical reference planes.
- Evaluated reproducibility by repeating prediction steps.
Main Results:
- Significant variation (+/- 5 mm) was observed in many soft tissue landmarks between predictions and actual results.
- Small differences (+/- 2 mm) were attributed to image linking and manual adjustments.
- Approximately 80% of the total variation was estimated to stem from inherent software inaccuracies.
Conclusions:
- Current video imaging software has limitations in accurately predicting combined orthodontic-orthognathic surgical outcomes.
- Software inaccuracy, physiologic changes, and nonstandardized imaging contribute to prediction discrepancies.
- Further improvements in video imaging technology are needed for reliable surgical simulation.